Quikrete Gray Self-Leveling Acrylic Concrete Sealant, 5.5 oz. is a ready-to-use acrylic latex emulsion specially formulated for use on any concrete surface, including sidewalks, walkways, driveways, patios, and steps. This easy-to-apply sealant fills and seals cracks up to 1/2 inch wide, blending seamlessly with the natural color of concrete thanks to its self-leveling properties. Simply squeeze the product directly from the tube for quick application. It dries to the touch in just 30 minutes and fully hardens within 24 hours, providing durable protection. Each 5.5 fl. oz. squeeze tube covers approximately 12 linear feet when applied as a 1/4 inch bead, making it an efficient solution for concrete crack repair. Model Number: 8640-15